Adobe 65023809 Printing Guide - Page 116

Choose Advanced > Print Production > Convert Colors, or click the Convert Colors tool

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• Preserve CMYK Primaries: When transforming colors to prepare CMYK documents for a different target print profile, preserves primaries. For colors with just one colorant, Acrobat uses that colorant. For colors with more than one colorant, Acrobat finds the color with the smallest color difference. Convert Colors Acrobat 9 Pro adds many new features to the revamped dialog, including access to the Ink Manager. Click the blue arrow under Document Colors to reveal or hide the color spaces and spot colors lists. To convert a document's colors to a different color space: 1. Choose Advanced > Print Production > Convert Colors, or click the Convert Colors tool ( ) in the Print Production toolbar. 2. In the Convert Colors dialog box, select a color type option from the list of document colors. You can specify different conversion options for different color spaces and colorants. For example, you could embed separate color profiles to calibrate color for grayscale, RGB, and CMYK objects. This strategy could be useful if your RIP color-manages PDF files or if you are sharing PDF files with others. 3. Select an option from the Action menu: • Preserve: Keeps objects in the selected color space when you output the document. • Convert: Uses the destination space profile to convert color objects to the chosen output profile. • Decalibrate: Removes embedded profiles from the color objects in that color space. • Map to: Maps a selected spot color to a specified process plate or another spot color in the document. 4. Choose a destination profile that accurately defines the target output device. 5. Specify which pages to convert. 6. Specify whether to embed the destination profile. If you embed the profile as a source color space, Acrobat tags all images with the destination profile. If you embed it as an output intent, Acrobat uses the destination profile as the output intent, replacing any existing output intent. Depending on the color spaces you select, the Convert Colors command will preserve, convert, or map color values from the source color space to the specified destination space as follows: • Objects with untagged RGB data (DeviceRGB) convert from the working space RGB profile to the CMYK gamut of the destination space. Untagged CMYK (DeviceCMYK) and grayscale (DeviceGray) values are converted in the same way. • Objects in device-independent color spaces (CalGray, CalRGB, or CIE L*a*b) can be preserved or converted. If they are converted, Acrobat uses the device-independent object's embedded profile information. • Objects set in spot colors (including Separation, DeviceN, and NChannel color spaces) can be preserved, converted, or mapped (aliased) to any other ink present Adobe Creative Suite 4 Printing Guide 114

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Adobe Creative Suite 4 Printing Guide
114
•
Preserve CMYK Primaries: When transforming colors to prepare CMYK documents
for a different target print profile, preserves primaries. For colors with just one colo-
rant, Acrobat uses that colorant. For colors with more than one colorant, Acrobat
finds the color with the smallest color difference.
Convert Colors
Acrobat 9 Pro adds many new features to
the revamped dialog, including access to
the Ink Manager° Click the blue arrow under
Document Colors to reveal or hide the color
spaces and spot colors lists°
To convert a document’s colors to a different color space:
1. Choose Advanced > Print Production > Convert Colors, or click the Convert Colors tool (
)
in the Print Production toolbar.
2. In the Convert Colors dialog box, select a color type option from the list of document colors.
You can specify different conversion options for different color spaces and colorants. For
example, you could embed separate color profiles to calibrate color for grayscale, RGB, and
CMYK objects. °is strategy could be useful if your RIP color-manages PDF files or if you are
sharing PDF files with others.
3. Select an option from the Action menu:
•
Preserve: Keeps objects in the selected color space when you output the document.
•
Convert: Uses the destination space profile to convert color objects to the chosen
output profile.
•
Decalibrate: Removes embedded profiles from the color objects in that color space.
•
Map to: Maps a selected spot color to a specified process plate or another spot color
in the document.
4. Choose a destination profile that accurately defines the target output device.
5. Specify which pages to convert.
6. Specify whether to embed the destination profile. If you embed the profile as a source color
space, Acrobat tags all images with the destination profile. If you embed it as an output intent,
Acrobat uses the destination profile as the output intent, replacing any existing output intent.
Depending on the color spaces you select, the Convert Colors command will preserve, convert,
or map color values from the source color space to the specified destination space as follows:
•
Objects with untagged RGB data (DeviceRGB) convert from the working space
RGB profile to the CMYK gamut of the destination space. Untagged CMYK
(DeviceCMYK) and grayscale (DeviceGray) values are converted in the same way.
•
Objects in device-independent color spaces (CalGray, CalRGB, or CIE L*a*b) can be
preserved or converted. If they are converted, Acrobat uses the device-independent
object’s embedded profile information.
•
Objects set in spot colors (including Separation, DeviceN, and NChannel color
spaces) can be preserved, converted, or mapped (aliased) to any other ink present